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Method of Making Superhydrophobic/Superoleophilic Paints, Epoxies, and Composites

a superhydrophobic, epoxie technology, applied in the direction of coatings, epoxy resin coatings, etc., can solve the problems of affecting the appearance of the powder, the superhydrophobic properties of the powder, and the inability to maintain the surfa

Active Publication Date: 2014-04-03
UT BATTELLE LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patent describes a method for making superoleophilic compositions, coatings, and surfaces that have a unique combination of properties. The compositions contain a plurality of superoleophilic particles with a hydrophobic coating layer that can pin oil within nanopores. The particles can be suspended in a solvent or coupled to a binder layer. The compositions can be used in various applications requiring anti-corrosive, anti-biofouling, and extreme water repellent properties. The method can also result in a bulk superhydrophobic / superoleophilic effect, where the underlying surface becomes a superhydrophobic or superoleophilic surface if the paint's surface gets damaged or abraded.

Problems solved by technology

Despite the impressive properties achieved by such known surfaces, the properties are not durable and the surfaces need to be replaced or otherwise maintained frequently.
Adding superhydrophobic powders in paints and epoxies, without adversely affecting their water repellent properties has been problematic since such paints and epoxies typically cover any exposed powder grains nanostructure and fills-in any of the powder's pores, thereby masking the powder's superhydrophobic properties.
The problem with this approach is that such a small amount of binder simply will not provide a well bonded, durable coating.

Method used

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  • Method of Making Superhydrophobic/Superoleophilic Paints, Epoxies, and Composites
  • Method of Making Superhydrophobic/Superoleophilic Paints, Epoxies, and Composites
  • Method of Making Superhydrophobic/Superoleophilic Paints, Epoxies, and Composites

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examples

[0087]In order to assess the performance of the superoleophilic particles and coatings described, superoleophilic coatings were applied to aluminum and radome plates that were submerged in the ocean for up to five weeks. The superoleophilic particles were spinodally decomposed sodium borosilicate glass particles with polysiloxane pinned within the nanopores of the particles, which included a fluorinated SAM hydrophobic coating.

[0088]The plates were made superhydrophobic by applying a superhydrophobic coating solution to the plates. The superhydrophobic coating solution contained 3 wt-% superhydrophobic powder (either superhydrophobic diatomaceous earth, superhydrophobic silica nanoparticles, or superhydrophobic spinodal silica powder) with a binder of ˜2 wt-% urethane (Clear Coat or PVC cement) in acetone (i.e., ˜95 wt-%).

[0089]Once the coating solution was dried, the powders were bonded to the plate substrate. At that time a low viscosity polysiloxane oil (500 tSc) was applied to t...

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Abstract

Superhydrophobic paints and epoxies comprising superoleophilic particles and surfaces and methods of making the same are described. The superoleophilic particles can include porous particles having a hydrophobic coating layer deposited thereon. superoleophilic particles.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application is a continuation-in-part of U.S. patent application Ser. No. 13 / 631,212, filed on Sep. 28, 2012, the entirety of which is hereby incorporated by reference.[0002]The following U.S. patents and U.S. patent applications are specifically referenced and incorporated herein by reference:[0003](i) U.S. Pat. No. 7,258,731 issued on Aug. 21, 2007 to Brian R. D'Urso, et al. entitled “Composite, Nanostructured, Super-Hydrophobic Material”;[0004](ii) U.S. patent application Ser. No. 11 / 749,852 filed on May 17, 2007 by Brian D'Urso, et al. entitled “Super-Hydrophobic Water Repellant Powder”;[0005](iii) U.S. patent application Ser. No. 11 / 777,486 filed on Jul. 13, 2007 (now U.S. Pat. No. 8,216,674 issued on Jul. 10, 2012) by John T. Simpson, et al. entitled “Superhydrophobic Diatomaceous Earth”;[0006]and[0007](iv) U.S. patent application Ser. No. 12 / 915,183 filed on Oct. 29, 2010 by Tolga Aytug, et al. entitled “Superhydrophobic Trans...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): C09D5/00
CPCC09D5/00C09D7/62C08K3/346C08K9/04C09D163/00C09D5/1681C09D7/67C09D7/68
Inventor SIMPSON, JOHN T.HUNTER, SCOTT ROBERT
Owner UT BATTELLE LLC